Question

how do bats use ultrasonic sound to catch prey

Answer 1

Bats send ultrasonic waves...they reflects back to them detecting any obstacles in their way....this is what sonar(sound navigation and ranging) works with..

Answer 2

hey there 
At night the bat uses its hearing to navigate its way to prey. Bats catch insects continuously using echolocation, an advanced navigation system. The bat emits ultrasonic waves with very high frequencies. Its calls are pitched at 20-100 kilohertz, a frequency that is too high-pitched for humans to hear naturally.
these waves reflect back by which the bat calculates the distance and understands its prey ..

hope it was helpfull 
if yes do mark me as brainliest pls ..

ur frnd 
alwin j